Insulated rail-joint.



'INSULATE IIIIIIIII T. APYL; oooooooooooooooooooooo s.

joints embodying my invention.

' ceive.

v insulation.

ANDREW MORRISON, or PITTSBURG, PENNSYLVANIA.

INSULATED. RAIL-JOINT.

Specification of Letters Patent.

Patented July 21, 1908.

Application filed January 2a, 1908. jsmn No. 412,270.

'To all whom it'm'ay concern: v

- Be it known that-I, ANDREW MORRISON, 0 Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented a new and useful Ini'rovement in Insulated Rail- Joints, of whic the following is a full,clear, and exact, deso1'iptioh,'reference being had to the accompanyingdrawings, forming part of this speeification in which- Y Figures 1 and 2are sectional viewsvof rail My invention has rclat'ionto the classofinsulated-rail .joints, relating more particue 'larly to the mannerofinsulating the same, the invention being designed to reduce'the;

amount of insulation required,

It is well known that in insulated rail joints, the greatest wear uponthe insulation occurs upon that portion t 20 terposed between the uppered es ofv the splice bars and theiunder sides o the adja-I cent rails,owing to' the severe poundingwhich these portions jof the insulation re-In aceordancewith-my invention, 1- make the insulation f rthis portionof the joint in separate pieces hich are so arranged that they can berev psed-edge for ed e, thereby practically dou dingthe life of t .e

Referring to the .drawin the joint bolts,

' interposed between the joint bars and fails.

The insulating pieces or strips 5 which are ,in-

terposed between the upper ed es. of. the.- s hce bars andtheunder sides0 -,the-heads o the rails are made in a separatepiece from thef ortions6, which are interposed'betwe'en.

the ower portidns of the s licebars and the 'upper surfaces of the" baseanges of the rails,-

being in this respect similar to the mode of insulation em loyed inmy'Patent Number cordance with my pfesent 'invention, ho ever, theinsulating strips 5are so madethat they can bereversect edge for ed e sothat the depending portions 5 thereo which he, against'the upperportions of the'webs-of the rails, ean take the v place of. theportions5.:5' In this manner, when the-portions fi-becom'e the numeral?designates the rail '3 the sp 'ce bars; 4 one of;

5 and 6"designate' the-insulation, is i the splice amend the undersideof the of the rail and having a free portion extend ofa splice bar andthe'funder' side 0 scribed.

so cut or Wornas to be no longer efiective,

the pieces can-be readily reversed and thus practically double theirlife; 'This feature, together with the fact that there is no uselessinsulation used'adjacent the middle portion of thewebs of the rails verylargely decreases the cost ofthe joints.

The-"form of invention shown in Fig.,2

differs from that shown in Fig. 1, only in that instead ofemploying aninsulating sleeve-7, where the bolt 4 passes through the web of therail, an insulating sleeve 8 is employed around the bolt, where itpasses through one of the splice bars. This enables the dependingportions of the insulation to bemade somewhat longer and to'corne incontact with the bolts, this form, however, being equally reversibleedgefor edge.

My invention is obviously applicable to joint bars of various othersections than those shown, being. in ;fact' independent of anyparticular form of the joint, I claim: 1. In an insulated rail joint, aninsulatin strip inter osed between the upper ed co the splice ar andtheunder side of the ead of the'rail and having a cc portion extendingdownwardly between the splice bar and the web of the rail, said stripbeing reversible edge for edge, substantially'as described. j 2 2. Inan'insulatedrail joint, an insulating strip intertpbsed between theupper edge 05 ing downwardly-between the splice bar and the web ofthe'rail, said-strip being'separate from ,theinsulation which is placedbetween the lower portion'of the: s lice bar and the base of the rail,and reversi le edge for edge, substantially as-described. 1 Inianinsulated rail joint, an insulating strip adapted for use between theufp er edge t e head of a rail, said strip heaving two portions at'anangle to each other and of substantially-the same-length, and shapewhereby thej-strip tween t e head of the rail and the splice bar, inyhand. and the other portion being free and not unof the rail, said striphaving two portions of substituted for the part which has beenunsubstantially the seme length and shape, one der compression,substantially as described. 10 of said ortions being under compressionbe In testimony whereof, I have hereunto set ,7 ANDREW )IORRISON. dercompression, said strip being reversible Witnesses: edge for edgewhereby the portion which has H. M. CORWIN,

been free and without compression may be Gno. H. PARMELEE

